Epidemiology: malaria 1980.
D000328:Adult; D002738:Chloroquine / Q000627:therapeutic use; D004352:Drug Resistance, Microbial; D006801:Humans; D008288:Malaria / Q000453:epidemiology*; D008875:Middle Aged; D010963:Plasmodium falciparum; D010966:Plasmodium vivax; D006113:United Kingdom
D002738:Chloroquine